Chemistry, 18.12.2019 02:31 malachitorres813
True of false an unbalanced force cannot change the direction in which an object is moving
Answers: 2
Chemistry, 22.06.2019 22:30
Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?
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Chemistry, 23.06.2019 01:00
Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas
Answers: 2
Chemistry, 23.06.2019 06:40
1.) which of the following is a molecule but not a compound? a.he b.f2 c.h2o d.ch4 2.) what is a physical combination of substances? a.a compound b.a molecule c.a mixture d.an element 3.) what is a chemical combination of substances? a.a compound b.an atom c.a mixture d.an element 4.) what is the relationship between the solute and solvent in a solution? a.they form a compound b.they form a mixture c.they form molecules d.they form chemical bonds 5.) the gases in air dissolve in water. what would be one way to reduce the amount of a gas dissolved in water? a.add more water b.reduce the air pressure c.increase the air pressure d.stir the water 6.) how would you determine the solubility of a substance? a.find how well it dissolved various substances. b.find the mass and the volume of the substance. c.find the temperature at which the substance evaporated. d.find how much i was able to dissolve in a solute. 7.) the periodic table organizes all of the kinds of a.molecules. b.compounds. c.atoms. d.ions. 8.)what distinguishes two substances combined to become a compound vs. two substances combined to become a mixture? a.whether they can be easily separated b.whether they chemically bond together c.whether they both are visible d.whether they are heterogeneous 9.) the principle components of air are: n2 78% o2 21% ar 0.95% co2 0.038% this is a solution of a.molecules and atoms. b.molecules. c.compounds and molecules. d.atoms.
Answers: 1
Chemistry, 23.06.2019 15:30
The smallest species of chameleon is found only on an island in madagascar the island has unique geological and climatic conditions that are essential for the chamaeleon to survive the chamaeleon was recently declared an endangered species years from now why wonβt this chameleons remains make for a good index fossil
Answers: 3
True of false an unbalanced force cannot change the direction in which an object is moving...
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